The Locks of Tartarus: Divine Seals of Transformation

What Are the Locks of Tartarus?

In The Things Gods Break, the Locks of Tartarus are seven magical seals placed at the bottom of a deep abyss inside the Titan prison. Each Lock is created by a different god or goddess—Hestia, Hades, Demeter, Poseidon, Zeus, Hera, and Aphrodite—and appears as a pie-shaped slice of the cavern floor visible on a glamour map shown by Rhea. When a being enters a Lock, their supernatural powers are immediately stripped away, leaving them mortal and vulnerable. This is why the Titans cannot unseal the Locks themselves: without their power, they “cease to exist,” as Phoebe explains. Lyra and Boone, having been born mortal, can survive the power-drain and return to their natural state.

Each Lock presents a unique trial that tests a specific moral or emotional quality rather than physical prowess. Hestia’s Lock conjures a labyrinth that mirrors Lyra’s childhood bedroom in the Order of Thieves, forcing her to confront her past and define her sense of home. Hades’ Lock recreates a chariot-racing arena where Lyra must resist succumbing to “worldly experience” and the lust embodied by the horses of Aphrodite. Demeter’s Lock requires drinking Kykeon, a hallucinogenic potion, and then surviving three stages of confronting her own hatred—starting with a memory of her mother abandoning her. Poseidon’s Lock tests “moral grounding” through an obstacle course over eel-infested water, while Zeus’s Lock involves a chaotic scene where Boone suffers a gruesome leg injury that the Titans must reset. The later Locks (Hera and Aphrodite) are only glimpsed on the map, suggesting trials centered on family bonds and desire.

Where Do the Locks Recur?

The Locks are mentioned or encountered throughout the middle and later chapters of the book. The first direct encounter is in Chapter 5, when Lyra falls into Hestia’s Lock and meets a reflection of the goddess. The second Lock (Hades) appears in Chapter 24, where a copy of Hades recognizes Lyra and recalls her previous attempts. After unsealing Hades’ Lock in Chapter 28, Lyra learns from the copy that there are seven in total. In Chapter 34, the Titans reveal the map and confirm that two have been opened. Demeter’s Lock is the focus of Chapter 51, Poseidon’s Lock in Chapter 62, and Zeus’s Lock in Chapter 84. The final two Locks—Hera and Aphrodite—are unsealed off-page, and Chapter 92 shows the Tartarus gates swinging open once all seven are complete.

How Does the Meaning Change Over Time?

Initially, the Locks appear to be obstacles designed to keep the Titans imprisoned: the gods who created the Locks are the same ones who trapped the Titans, and the Locks serve as wards. Lyra first thinks of them as “roadblocks” she must survive to escape. As she progresses, however, the Locks become deeply personal trials of transformation. Each Lock forces Lyra to face a different fear or flaw: her abandonment trauma (Hestia), her craving for Hades (Hades), her self-hatred (Demeter), and her need for trust and cooperation (Poseidon, Zeus). The Locks shift from external barriers to internal crucibles, reshaping Lyra’s identity. By the time she enters Demeter’s Lock, she deliberates whether her knowledge of Zeus’s curse made her failures a “self-fulfilling prophecy,” indicating that the Locks test not just survival but self-awareness.

The meaning also evolves for the other characters. The Titans view the Locks as their only hope of freedom, but they also fear the cost: Themis died attempting Hestia’s Lock, and later Iapetus is turned into a flaming Pandemonium creature while trying to reach safety. The Locks become symbols of sacrifice and loss. For Boone, the Locks represent physical and emotional endurance—he breaks his legs in Zeus’s Lock and endures agonizing bone-setting without anesthetic. For Hades (the real one), the Locks are reminders that Lyra must do what he cannot, underscoring his helplessness and later his mortality.

Character and Theme Connections

The Locks directly connect to major themes and characters:

• Sacrifice and Redemption: Each unsealing costs someone—Themis dies, Iapetus is corrupted, Boone is maimed, and Lyra repeatedly risks her life. The final unsealing of the gates leads to Hades losing his powers and immortality, a sacrifice that redeems him through vulnerability.

• Fate Versus Choice: Lyra learns that she has attempted the Locks in previous time resets, suggesting a deterministic cycle. Yet she chooses to change her approach in Demeter’s Lock by leaping into the abyss with “courage,” actively breaking the pattern.

• Deception and Glamour: The Locks themselves are glamoured—the map is a glamour, and the copies of Hestia and Hades are illusions. Lyra’s developing ability to see through glamour (noted in Chapter 49) becomes essential to navigating the later Locks.

• Love as a Transformative Force: Persephone’s encouragement, Hades’ ghostly presence in his Lock, and the broken butterfly talisman from Cronos all ground Lyra in love. The talisman—a quartz butterfly Hades once gave Cronos—is broken in half; Cronos gives Lyra one piece as an anchor to reality within the Locks, representing how love can stabilize even amid magical trials.

• Self-Worth and Belonging: Hestia’s Lock directly tests Lyra’s self-worth by putting her back in the thieves’ den where she was unwanted. Overcoming the Lock means reclaiming her value independent of her origins.

Key characters associated with the Locks:

• Lyra Keres – The only one who can unseal them; her growth is measured by her responses to each trial.
• Boone Runar – Her partner, whose physical sacrifices mirror the ordeal.
• Hades – His Lock is the only one where a copy interacts with Lyra as if aware of her history; later, his mortality is tied to the completion of the Locks.
• Persephone – She provides emotional support and shares her energy in Zeus’s Lock.
• Cronos – The Titan king who manages the logistics of the Locks and gives Lyra the broken butterfly.
• Rhea – The Titaness who reveals the map and the truth about Themis’s death.

Study Questions

1. Literally, what are the Locks of Tartarus?
   Answer: They are seven divine seals, each created by a different Olympian god or goddess, located inside the abyss in Tartarus. When entered, the Locks strip all supernatural powers from the entrant, forcing a mortal-level trial. The Locks are represented as pie-shaped sections on a glamour map and can only be unsealed by beings who were born mortal, like Lyra and Boone, because Titans and gods die without their powers.

2. How does Lyra’s understanding of the Locks change from the first Lock to the later ones?
   Answer: After Hestia’s Lock, Lyra sees the Locks as random traps. By the time she reaches Hades’ Lock, the copy tells her she has attempted his many times before, suggesting she is repeating a cycle. In Demeter’s Lock, she realizes her failures may stem from believing Zeus’s curse that she is unlovable. She resolves to “change her approach” and embrace courage rather than fear. Later, she uses the broken butterfly talisman to ground herself, showing she has learned to anchor emotion to physical objects. Overall, her view shifts from survival to intentional transformation.

3. How do the Locks relate to the theme of transformation in the novel?
   Answer: Each Lock demands that Lyra shed a layer of her old identity: Hestia’s forces her to redefine home, Hades’ tests her desire for Hades, Demeter’s strips her hatred, Poseidon’s builds trust, and Zeus’s requires her to endure shared suffering. The cumulative effect is that Lyra emerges from the seven Locks as a transformed person—a savior for the Titans and a queen of the Underworld. The Locks are literal crucibles of transformation, burning away weakness and forging new strength.

4. What is the significance of the broken quartz butterfly that Cronos gives Lyra before Demeter’s Lock?
   Answer: The butterfly, originally a gift from Hades to Cronos, symbolizes love and protection across different relationships. By breaking it, Cronos creates a grounding talisman: Lyra keeps one half, and he keeps the other. Within the hallucinatory trial of Demeter’s Lock, the jagged edge of the broken piece feels the same against her skin, anchoring her to reality. It represents that even broken things can serve as sources of strength, and that love (from Hades and Cronos) can steady someone amid chaos. Cronos later promises to “put the pieces back together,” symbolizing hope for healing after the ordeal.